code: def get_cpu_data():
      cpu_percent = psutil.cpu_percent(percpu=True)
      df = pd.DataFrame(
          list(enumerate(cpu_percent)), columns=["CPU", "Utilization"]
      )
      df["time"] = pd.Timestamp.now()
      return df
  
file_path: holoviews/examples/gallery/apps/bokeh/streaming_psutil.py
imports: import psutil
  import panel
  import pandas
  import holoviews
  from holoviews import dim, opts
label_desc: Use image node_id 2 for calling a global function with example usage: get_cpu_data() and returns: df